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G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
G09F13/00—Illuminated signs; Luminous advertising
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FR1049217D1951-10-221952-01-17Appareil de publicité par réflexion de textes lumineux mobiles lisibles des deux côtés de l'appareil
ExpiredFR1049217A
(fr)